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Finding the Fourth Proportional to 14,421.75, 19,902.02 and 7,797.75

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Solution

The fourth proportional to 14,421.75, 19,902.02 and 7,797.75 is: 10,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.75 : 19,902.02 = 7,797.75 : x
  2. Step 2: Convert to fraction form
    14,421.75/19,902.02 = 7,797.75/x
  3. Step 3: Cross multiply
    14,421.75x = 19,902.02 × 7,797.75
  4. Step 4: Simplify right side
    14,421.75x = 155,190,976.46
  5. Step 5: Solve for x
    x = 155,190,976.46/14,421.75
  6. Step 6: Final answer
    x = 10,760.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.